Title:
ロータリーキルンを用いた亜鉛含有酸化鉄の脱亜鉛方法
Document Type and Number:
Japanese Patent JP4499306
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for removing zinc in zinc-containing iron oxide using a rotary kiln with which the formation of a ring is prevented and solid- reduction of iron oxide is performed by separating zinc from the zinc-containing iron oxide in a shorter time than that in the conventional method and the pro ductivity can be improved. SOLUTION: In the method for removing zinc in the zinc-containing iron oxide using the rotary kiln 12, with which the zinc-containing iron oxide is heated in the furnace 24 of the rotary kiln 12 and the zinc is separated from the zinc-containing iron oxide and further, the iron oxide is reduced to obtain the iron-containing material 25, mixture raw material 11 consisting essentially of the zinc-containing iron oxide and a carbonaceous material for reducing zinc oxide in the zinc-containing iron oxide and the iron oxide is manufactured. The mixture raw material 11 is charged into the furnace 24 of the rotary kiln 12 having >=1,100 deg.C atmospheric temperature in the furnace and the zinc oxide in the zinc-containing iron oxide is reduced with the carbonaceous material and further, vaporized to obtain the iron-containing material 25 chargeable into a reduction furnace.
Inventors:
Shinichi Kuromame
Kijo Ueno
Saburo Sato
Hiroyuki Kajioka
Kijo Ueno
Saburo Sato
Hiroyuki Kajioka
Application Number:
JP2001043863A
Publication Date:
July 07, 2010
Filing Date:
February 20, 2001
Export Citation:
Assignee:
Sumitomo Heavy Industries Ltd.
International Classes:
C22B1/00; C22B5/10; C22B5/12; C22B7/02; C22B9/02; C22B19/30
Domestic Patent References:
| JP7070662A | ||||
| JP52111409A | ||||
| JP58045335A |
Attorney, Agent or Firm:
Fujio Nakamae